The Great War By alexiswetzel Jun 28, 1914 Francis Ferdinand is assassinated Period: Jun 28, 1914 to Jun 28, 1919 The Great War Jul 28, 1914 Austria declared war on Serbia Aug 1, 1914 Germany declared war on Russia Aug 3, 1914 Germany declared war on France and invaded Belgium Aug 4, 1914 Britain declared war on Germany Jan 19, 1915 First zeppelin attack May 7, 1915 Lusitania was sunk by German U-boat May 23, 1915 Italy declared war on Germany and Austria Sep 15, 1916 First use of tanks at Somme Feb 1, 1917 Germany’s unrestricted submarine warfare campaign started Apr 6, 1917 USA declared war on Germany Oct 4, 1918 Germany asked the Allies for an armistice Nov 11, 1918 Armisitce is signed- END OF WORLD WAR I Jun 28, 1919 Germany signs Treaty of Versailles